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Key Facts
- Federal level: The Sixth Amendment gives the accused the right to the Assistance of Counsel, which Supreme Court precedent treats as including effective assistance in criminal cases.
- National overview: Strickland v. Washington sets a two-part ineffective-assistance standard requiring deficient performance and prejudice.
- National overview: Strickland requires prejudice to be a reasonable probability that, but for counsel’s unprofessional errors, the result would have been different.
- National overview: In Hill v. Lockhart, the guilty-plea prejudice inquiry focuses on whether there is a reasonable probability the defendant would not have pleaded guilty and would have insisted on going to trial.
- National overview: In Missouri v. Frye, the effective-assistance right extends to plea offers that lapse or are rejected, including counsel’s general duty to communicate formal plea offers.
- National overview: In Frye, a lapsed-or-rejected plea-offer prejudice showing requires a reasonable probability of acceptance and that the plea would have been entered without prosecution cancellation or trial-court refusal, if discretion existed under state law.
- National overview: In Lafler v. Cooper, prejudice for a rejected plea offer that leads to trial requires a reasonable probability the plea would have been presented, accepted, and produced a less severe conviction or sentence.
- National overview: Lafler describes a remedy that can include ordering the State to reoffer the plea, followed by the trial court’s discretionary handling afterward.
- Federal level: Supreme Court dockets for Missouri v. Frye (No. 10-444) and Lafler v. Cooper (No. 10-209) list American Bar Association amicus participation.
Plea negotiations can shape what outcomes remain possible in a criminal case, and the Supreme Court has treated effective representation during plea bargaining as part of the constitutional right to counsel.
- The Sixth Amendment right includes effective assistance
- Strickland’s two part test for ineffective assistance
- Hill v. Lockhart and guilty plea challenges
- Missouri v. Frye and plea offers that lapse or are rejected
- Lafler v. Cooper and rejected plea offers that lead to trial
- Where the ABA appears in the plea stage cases
- Federal constitutional standards and the state law boundary
- Other counsel related issues that often come up alongside plea bargaining
- Related legal information
- Sources
The Sixth Amendment right includes effective assistance
The Sixth Amendment guarantees that an accused has the right “to have the Assistance of Counsel,” and Supreme Court case law evaluates whether that assistance functions effectively at critical stages.
Strickland’s two part test for ineffective assistance
The general framework for ineffective assistance comes from Strickland v. Washington, which requires proof of both deficient performance and prejudice.
Hill v. Lockhart and guilty plea challenges
In Hill v. Lockhart, the Court applied Strickland to guilty-plea challenges and focused the prejudice showing on whether there is a reasonable probability the defendant would not have pleaded guilty and would have insisted on going to trial.
Missouri v. Frye and plea offers that lapse or are rejected
In Missouri v. Frye, the Court held that the Sixth Amendment right to effective assistance extends to plea offers that “lapse or are rejected,” including a general duty for counsel to communicate formal plea offers.
In Frye, prejudice for a lapsed-offer theory depends on a reasonable probability that the earlier offer would have been accepted and that the plea would have been entered without prosecution cancellation or trial-court refusal, if the relevant prosecution and trial-court discretion existed under state law.
Lafler v. Cooper and rejected plea offers that lead to trial
In Lafler v. Cooper, the Court addressed a different plea-stage path where deficient advice leads a defendant to reject a plea offer and proceed to trial.
The Lafler prejudice inquiry asks for a reasonable probability the plea offer would have been presented to the court, the court would have accepted its terms, and the resulting conviction or sentence would have been less severe.
Lafler also discusses a remedy that can include ordering the State to reoffer the plea, with the trial court then deciding how to proceed in light of the new posture.
Compact comparison of the plea stage prejudice inquiries (Hill, Frye, Lafler)
| Plea-stage scenario | Supreme Court prejudice focus | Core case |
|---|---|---|
| Guilty plea itself is challenged | Whether there is a reasonable probability the defendant would not have pleaded guilty and would have insisted on going to trial | Hill v. Lockhart |
| Lapsed offer due to counsel problems | Whether there is a reasonable probability the defendant would have accepted the earlier offer and the prosecution and trial court would not have blocked acceptance, based on authority and discretion under state law | Missouri v. Frye |
| Rejected offer leads to trial | Whether there is a reasonable probability the plea offer would have been presented and accepted and would have led to a less severe conviction or sentence | Lafler v. Cooper |
Where the ABA appears in the plea stage cases
Supreme Court docket materials for No. 10-444, Missouri v. Frye list an American Bar Association amicus curiae filing.
Supreme Court docket materials for No. 10-209, Lafler v. Cooper also list American Bar Association amicus participation.
Federal constitutional standards and the state law boundary
Even though the governing standards come from Sixth Amendment doctrine, Frye’s prejudice analysis expressly ties certain parts of the plea-offer “could have happened” question to whether prosecution cancellation and trial-court acceptance would have been possible through discretion authorized under state law.
Other counsel related issues that often come up alongside plea bargaining
Discussions about counsel at the plea stage sometimes overlap with other lawyer-related legal topics, including rules about confidentiality in attorney-client relationships, but those topics rely on different legal standards than the Sixth Amendment ineffective-assistance framework.
